R Z ยท Ronny Zavrtak
| title | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|
| Amore: For a Better Tomorrow | 978-602-03-1463-1 (602-03-1463-4) | 2015 |
| Amore: Permata di Hatiku | 978-602-03-0627-8 (602-03-0627-5) | 2014 |
| Dalam Pelukan Bintang | 978-602-03-0069-6 (602-03-0069-2) | 2013 |